SOD1 and diabetes mellitus: An increasing number of studies demonstrate that in oxidative stress induced diseases (such as diabetes induced tissue damage, memory impairment, and hepatic injury, but not gut diseases-related evidences), EA elevates the activities SOD and glutathione (GSH) and declines the MDA levels by increasing the nuclear translocation of Nrf2, thereby protecting cells from the free radical damage [54,55,56,57,58].